package com.lsc.easyblog.interceptor;

import com.lsc.easyblog.model.User;
import org.springframework.lang.Nullable;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @describe: 登录拦截器
 * @author: Lu Shengcan
 * @date: 2022-1-1, 周六, 15:41
 */
public class LoginInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response,
                             Object handler) throws Exception {
        // System.out.println("this is "+request.getRequestURL());
        User user = (User) request.getSession().getAttribute("user");
        // System.out.println("*** preHandle 2 ***");

        if (user == null) {
            // System.out.println("**** user == null ***");
            response.sendRedirect("/admin/login");
            return false;
        }
        // System.out.println("user.u_name: " + user.getU_name());
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request,
                           HttpServletResponse response,
                           Object handler, @Nullable ModelAndView modelAndView) throws Exception {
        // System.out.println("*** postHandle ***");
    }

    @Override
    public void afterCompletion(HttpServletRequest request,
                                HttpServletResponse response,
                                Object handler, @Nullable Exception ex) throws Exception {
        // System.out.println("*** afterCompletion ***");

    }
}
